The altcoin season index reached 71, which inspires optimism among analysts: perhaps cryptocurrency is moving from the Ethereum (ETH) season to the full season of altcoins.
In addition to the index, market experts also note other signs indicating the possible rally of altcoins.
From Ethereum to small altcoins
According to Blockchain Center, the altcoin season index sharply grew from 59 to 71 today, September 10. Typically, the value above 75 signals the beginning of the altcoin season, when 75% of the TOP-50 altcoins are ahead of bitcoin in 90 days. Although the index has not yet reached this level, its rapid growth has already attracted the attention of traders.
Merlijn The Trader has highlighted another important sign. In the post on the social network X (former Twitter), he said that the dominance of Bitcoin (BTC.D), reflecting his share in the general capitalization of the crypto, fell sharply below the key level of support. Merlijn emphasized that the fall is rapidly.
From a technical point of view, another analyst spent parallels with historical patterns. He recalled that in 2017, altcoins made a breakthrough after prolonged consolidation, which caused one of the strongest rally in the history of cryptocurrencies.
The analyst noted that the current situation resembles that period. The structure shows familiar signs: a descending wedge, a confirmed breakthrough and the ongoing phase of accumulation, when investors gradually occupy positions. In his opinion, these factors indicate the possible significant growth of altcoins.
Meanwhile, the famous investor Lark Davis noted a recent breakthrough in altcoins, indicating that they leave the triangular formation up.
All these signals indicate the transition of capital to altcoins in September. According to Altcoin Vector, the market phase has shifted from Ethereum to altcoin with less capitalization. This, based on past patterns, signals a decrease in interest in a wider sector of altcoins and often precedes return to bitcoin.
What has changed in the altcoin season in September
Against the background of the stir around the altsyzone, analysts note that September growth is accompanied by special speakers. The founder of Moonrock Capital Simon Dedic warned that speculative tokens with high grades and dubious volumes of trading are also growing.
Experienced market participants emphasize that the situation in 2025 differs from past cycles. Gareth Soloway noted that today’s “Bull -Bull market of altcoinov” has shifted from altcoins to shares with low capitalization.
Thus, the growth of the altsyzone index, a decrease in bitcoin dominance and technical installations indicate a possible altcoin rally. But with an increase in speculation and fraud, this unique cycle requires caution.
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Source: Cryptocurrency

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